If the half life of a first order reaction in A is 2 min, how long will it take A to reach 

(a) 10 percent of its initial concentration?

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#Question id: 1278

#SCPH05 I Biotechnology

Vertebrate gap junctions are composed of:

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#Question id: 14135

#I Life Science/ Life Sciences Group – I-V

Which of the following statement is correct about PAM matrix? 

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#Question id: 19661

#SCPH05 I Biotechnology

Which of the following substances has the highest melting point?

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#Question id: 10996

#I Life Science/ Life Sciences Group – I-V

A ventricular depolarization wave when traveling 60° in the frontal plane will cause a large positive deflection in which of the following leads?

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#Question id: 59

#SCPH01 Biochemistry

Nitrogen (N) normally forms three covalent bonds with a valence of five. However, ammonium has four covalent bonds, each to a different hydrogen (H) atom (H has a valence of one). What do you predict to be the charge on ammonium?